425281 has 2 divisors, whose sum is σ = 425282. Its totient is φ = 425280.

The previous prime is 425279. The next prime is 425291. The reversal of 425281 is 182524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410881 + 14400 = 641^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 425281 - 2¹ = 425279 is a prime.

It is a super-2 number, since 2×425281² = 361727857922, which contains 22 as substring.

Together with 425279, it forms a pair of twin primes.

It is a Chen prime.

425281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (425251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212640 + 212641.

It is an arithmetic number, because the mean of its divisors is an integer number (212641).

2⁴²⁵²⁸¹ is an apocalyptic number.

It is an amenable number.

425281 is a deficient number, since it is larger than the sum of its proper divisors (1).

425281 is an equidigital number, since it uses as much as digits as its factorization.

425281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640, while the sum is 22.

The square root of 425281 is about 652.1357220702. The cubic root of 425281 is about 75.2012962844.

It can be divided in two parts, 4 and 25281, that multiplied together give a square (101124 = 318²).

The spelling of 425281 in words is "four hundred twenty-five thousand, two hundred eighty-one".